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gitea/modules/util/filebuffer/file_backed_buffer.go
KN4CK3R 1d332342db
Add Package Registry (#16510)
* Added package store settings.

* Added models.

* Added generic package registry.

* Added tests.

* Added NuGet package registry.

* Moved service index to api file.

* Added NPM package registry.

* Added Maven package registry.

* Added PyPI package registry.

* Summary is deprecated.

* Changed npm name.

* Sanitize project url.

* Allow only scoped packages.

* Added user interface.

* Changed method name.

* Added missing migration file.

* Set page info.

* Added documentation.

* Added documentation links.

* Fixed wrong error message.

* Lint template files.

* Fixed merge errors.

* Fixed unit test storage path.

* Switch to json module.

* Added suggestions.

* Added package webhook.

* Add package api.

* Fixed swagger file.

* Fixed enum and comments.

* Fixed NuGet pagination.

* Print test names.

* Added api tests.

* Fixed access level.

* Fix User unmarshal.

* Added RubyGems package registry.

* Fix lint.

* Implemented io.Writer.

* Added support for sha256/sha512 checksum files.

* Improved maven-metadata.xml support.

* Added support for symbol package uploads.

* Added tests.

* Added overview docs.

* Added npm dependencies and keywords.

* Added no-packages information.

* Display file size.

* Display asset count.

* Fixed filter alignment.

* Added package icons.

* Formatted instructions.

* Allow anonymous package downloads.

* Fixed comments.

* Fixed postgres test.

* Moved file.

* Moved models to models/packages.

* Use correct error response format per client.

* Use simpler search form.

* Fixed IsProd.

* Restructured data model.

* Prevent empty filename.

* Fix swagger.

* Implemented user/org registry.

* Implemented UI.

* Use GetUserByIDCtx.

* Use table for dependencies.

* make svg

* Added support for unscoped npm packages.

* Add support for npm dist tags.

* Added tests for npm tags.

* Unlink packages if repository gets deleted.

* Prevent user/org delete if a packages exist.

* Use package unlink in repository service.

* Added support for composer packages.

* Restructured package docs.

* Added missing tests.

* Fixed generic content page.

* Fixed docs.

* Fixed swagger.

* Added missing type.

* Fixed ambiguous column.

* Organize content store by sha256 hash.

* Added admin package management.

* Added support for sorting.

* Add support for multiple identical versions/files.

* Added missing repository unlink.

* Added file properties.

* make fmt

* lint

* Added Conan package registry.

* Updated docs.

* Unify package names.

* Added swagger enum.

* Use longer TEXT column type.

* Removed version composite key.

* Merged package and container registry.

* Removed index.

* Use dedicated package router.

* Moved files to new location.

* Updated docs.

* Fixed JOIN order.

* Fixed GROUP BY statement.

* Fixed GROUP BY #2.

* Added symbol server support.

* Added more tests.

* Set NOT NULL.

* Added setting to disable package registries.

* Moved auth into service.

* refactor

* Use ctx everywhere.

* Added package cleanup task.

* Changed packages path.

* Added container registry.

* Refactoring

* Updated comparison.

* Fix swagger.

* Fixed table order.

* Use token auth for npm routes.

* Enabled ReverseProxy auth.

* Added packages link for orgs.

* Fixed anonymous org access.

* Enable copy button for setup instructions.

* Merge error

* Added suggestions.

* Fixed merge.

* Handle "generic".

* Added link for TODO.

* Added suggestions.

* Changed temporary buffer filename.

* Added suggestions.

* Apply suggestions from code review

Co-authored-by: Thomas Boerger <thomas@webhippie.de>

* Update docs/content/doc/packages/nuget.en-us.md

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Thomas Boerger <thomas@webhippie.de>
2022-03-30 16:42:47 +08:00

147 lines
3.1 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package filebuffer
import (
"bytes"
"errors"
"io"
"os"
)
const maxInt = int(^uint(0) >> 1) // taken from bytes.Buffer
var (
// ErrInvalidMemorySize occurs if the memory size is not in a valid range
ErrInvalidMemorySize = errors.New("Memory size must be greater 0 and lower math.MaxInt32")
// ErrWriteAfterRead occurs if Write is called after a read operation
ErrWriteAfterRead = errors.New("Write is unsupported after a read operation")
)
type readAtSeeker interface {
io.ReadSeeker
io.ReaderAt
}
// FileBackedBuffer uses a memory buffer with a fixed size.
// If more data is written a temporary file is used instead.
// It implements io.ReadWriteCloser, io.ReadSeekCloser and io.ReaderAt
type FileBackedBuffer struct {
maxMemorySize int64
size int64
buffer bytes.Buffer
file *os.File
reader readAtSeeker
}
// New creates a file backed buffer with a specific maximum memory size
func New(maxMemorySize int) (*FileBackedBuffer, error) {
if maxMemorySize < 0 || maxMemorySize > maxInt {
return nil, ErrInvalidMemorySize
}
return &FileBackedBuffer{
maxMemorySize: int64(maxMemorySize),
}, nil
}
// CreateFromReader creates a file backed buffer and copies the provided reader data into it.
func CreateFromReader(r io.Reader, maxMemorySize int) (*FileBackedBuffer, error) {
b, err := New(maxMemorySize)
if err != nil {
return nil, err
}
_, err = io.Copy(b, r)
if err != nil {
return nil, err
}
return b, nil
}
// Write implements io.Writer
func (b *FileBackedBuffer) Write(p []byte) (int, error) {
if b.reader != nil {
return 0, ErrWriteAfterRead
}
var n int
var err error
if b.file != nil {
n, err = b.file.Write(p)
} else {
if b.size+int64(len(p)) > b.maxMemorySize {
b.file, err = os.CreateTemp("", "gitea-buffer-")
if err != nil {
return 0, err
}
_, err = io.Copy(b.file, &b.buffer)
if err != nil {
return 0, err
}
return b.Write(p)
}
n, err = b.buffer.Write(p)
}
if err != nil {
return n, err
}
b.size += int64(n)
return n, nil
}
// Size returns the byte size of the buffered data
func (b *FileBackedBuffer) Size() int64 {
return b.size
}
func (b *FileBackedBuffer) switchToReader() {
if b.reader != nil {
return
}
if b.file != nil {
b.reader = b.file
} else {
b.reader = bytes.NewReader(b.buffer.Bytes())
}
}
// Read implements io.Reader
func (b *FileBackedBuffer) Read(p []byte) (int, error) {
b.switchToReader()
return b.reader.Read(p)
}
// ReadAt implements io.ReaderAt
func (b *FileBackedBuffer) ReadAt(p []byte, off int64) (int, error) {
b.switchToReader()
return b.reader.ReadAt(p, off)
}
// Seek implements io.Seeker
func (b *FileBackedBuffer) Seek(offset int64, whence int) (int64, error) {
b.switchToReader()
return b.reader.Seek(offset, whence)
}
// Close implements io.Closer
func (b *FileBackedBuffer) Close() error {
if b.file != nil {
err := b.file.Close()
os.Remove(b.file.Name())
return err
}
return nil
}